After creating several more visual novel adventure games, Horii went on to create Dragon Quest, which is said to have created the blueprint for Japanese console role-playing games, taking inspiration from Portopia,[6] as well as Wizardry[6] and Ultima.[1] He was a fan of Apple PC RPG games and was motivated to create Dragon Quest for ordinary gamers, who found such games difficult, and thus he worked on an intuitive control system,[7] influenced by his work on Portopia.[6]